Apparatus for making rolled stay-bolts.



H. K. ADAMS.

APPARATUS FOR MAKING ROLLED BOLTS.

APPLICATION FILED MAY 25*:1 914- Patented J an. 5, 1915.

3 SHEETS-SHEET l.

H. K. ADAMS.

APPARATUS FOR MAKING ROLLED STAY BOLTS.

APPLICATION FILED MAY 25,1914.

Patented Jan. 5, 1915.

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3 SHEETS SHEET 2.

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H. K. ADAMS.

APP TUS FOR MAKING ROLLED STAY BOLTS.

PPLIGATION FILED MAY 25, 1914.

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HENRY K. ADAMS, 01E NASHVILLE, TENNESSEE.

APPARATUS FOR MAKING ROLLED STAY-BOLTS.

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Specification of Letters Patent Patented Jan.5,1l15.-

Application filed. May 25, 1914. Serial N 0. 840,804.

To all whom it may concern Be it known that T, HENRY K. ADAMS, a citizen of the United States," residing at Nashville, in the county of Davidson and State of Tennessee, have invented certain new and useful Improvements in Apparatus for Making Rolled Stay-Bolts; and do hereby declare the following to be a full, clear, and exact description of the invention, such as will enable'others skilled in the art to which it appertains to make and use the same.

This invention relates to a machine for making rolled stay bolts, and has for its object to provide a means which will be comparatively inexpensive to construct and will be more certain and efficient in action than those heretofore proposed.

The invention consists in the novel combinations of parts, anddetails of construction constituting my machine, all as will be more .fully hereinafter disclosed and particularly pointed. out in the claims.

Referring to the accompanying drawings forming a part of this specification in which like numerals designate like parts in all the vviewsFigure 1 is a diagranmiatic plan view of a machine made in accordance with my invention; Fig. 2 is anend elevational view of the parts shown in Fig. 1'; Fig. 3 is a side elevational view of the parts shown in Fig. 2; Fig 4 is a diagrammatic cross sectional view partly broken away of the rolls and certain coacting parts; Fig. 5 is a view of.a .stay bolt partially completed, after passing through my machine.

1 indicates any suitable power pulley mounted on the shaft 2 carrying the, pinion 3 and meshing with the gear 4 provided with the integral clutch member 5 loose on the shaft 6 to which is rigidly attached the driving gear 7 meshing with the gear 8 rigid with the shaft 9 on which is mounted the upper roll 10. The lower roll 11 is rigid with the shaft 6, on which is also the clutch member 12 provided with the oam groove 13 and thecontrolling groove 14: in which enters the pin 15 carried by the lever 16 pivoted, as at 17 to the bracket or frame 18, and carrying at its upper end 19 the pivot 20 engaging the plunger 21 controlled by the spring 22.

24 represents a foot treadle connected by the links 25 to the levers 26 pivoted at 27 to al'ug or other portion of the framework, and connected as by the rod 28 as shown.

The said rod or bar 28 is joined as at 29 by the connecting member 30 which extends to the member 31 to which is connected the rod 32 pivoted as at 33 to the hand lever 34: which in turn is pivoted as at 35 to the frame or bracket 18. The extendingend 36 ofthe lever 34 engages the plunger 37 controlled by the spring 38 the lower end 39 of which is adapted to enter the cam groove 13 on the clutch member 12 aswill be readily understood. Each of therolls 10 and-11 are provided with the smaller grooves 40 extending substantially one half way around the rolls or throughan angle of say 180, and each of the said rolls is further provided with the larger grooves 41 likewise extending substantially half way around each roll or through an angle of 180, but of course the angular distance through which these respective grooves extend may be varied at will to suitthe special work to be turned out.

As. best illustrated in Fig. 4 a gage bar resting upon a support 51 and controlled by a spring 52 is pivoted as at 53 to a short lever 54 pivoted on the rod 55 and having an end 56 adapted to enter the cam groove 60 with which the lower roll is provided as will be disclosed. later. Further each of the large semicircular grooves 41 in each roll 10 and 11 is joined at each end to its corresponding smaller groove 40 by an inclined surface 57 as will be clea'r'from Figs. 1 and f of the drawings. These inclined surfaces 57 on the contiguous rolls are of such a shape as to form abeveled connection 58 between -which is also rigid with the gear 4 power will be transmitted fromthe clutch member 5 to the clutch member 12, thence to the shaft 6, the gear 7, gear 8, shaft 9, and roll 10.- The roll 11 being fixed on the shaft 6 will also revolve and ina direction opposite to that of roll- 10 as indicated by the arrows in Fig. 4. Bolt blanks 65.cut in suitable lengths from rod like material and of a diameter substantially of the size of the finished bolt head may now be presented to the rolls as indicated in dotted lines in Fig. 4. The dimensions of the grooves 40 are such as to prevent the said blanks 65 from passing therethrough, while the dimensions of the grooves 41 are such as to permit the end of said blanks 65 to pass. Accordingly the operator presents said blanks 65 and when the matching grooves 41 come opposite the end of said blank 65 the same passes between the rolls until it strikes the gage rod 50, whereupon the operator does not push the blank 65 any farther. The rolls 10 and '11 now continue to turn in the direction of the arrows until the smaller matching rooves 40 begin to bite onto the blank 65. IVhen this happens, the inclined surfaces 57 on the rolls 10 and 11 form at a predetermined distance from the end the beveled surface 58 shown on the left hand end of the partly finished bolt illustrated in Fig. 5,

v and, the formation of the body portion 67 of the said bolt begins. As the smaller matching grooves 40 continue to pull the bolt blank through the. rolls the extreme end 68 of said blank pushes the gage 50 off of its support 51 against the tension of the spring 52 and the said gage falls down from its full line position shown in Fig. 4 to its dotted line position. In the meantime the bolt blank 65 continues to be forced through the rolls until the ends of the smaller grooves 40 are reached whereupon other inclined surfaces 57 on the ro11s 10 and 11 form the beveled surface 58 shown onthe right hand end of the partly finished bolt illustrated in Fig. 5. When the ends of the grooves 40 have been thus reached the other end of the enlarged grooves 41 will match each other whereupon the enlarged right hand end of the partly finished bolt shown in Fig. 5 will pass through the rolls, and the said partly finished bolt will be ready to be acted upon by any suitable machine for finishing off the heads. In the meantime, as the guide 50 falls from its support 51 the lever 54 turns on its pivot 55, and its other end 56 enters the groove 60 in the roll 11. As the said roll 11 continues to turn, the cam groove 60 turns with said roll and forces down the end 56 of the lever 54 from its dotted line to its full line position shown in Fig. 4, and thereupon restores the gage bar 50 to its full line position illustrated in Fig. 4, and thereby causes it to be ready for the reception of another bolt blank. It Will thus be seen that the operator may rapidly and readily present blanks to the rolls, push them through as rapidly as he can until he touches the gage bar 50 whereupon the machine takes hold of the blanks and completes the partly finished bolt at once, thus imparting to the finished bolt a rolled body portion 67 which of course is much stronger and more desirable than a turned body.

When it is desired to start the machine it is only necessary to push down on the foot' treadle 24 or to pull down on the hand lever 34, whereupon the extreme end 39 of the plunger 37 will be taken out of the cam groove associated with the member 12 and the spring 22 will, through the levers 19 and 16 force the clutch member 12 into engagement with the clutch member 5 and thereby transmit power from the gear 4 and pulley 1 to the rolls. The machine will now make one revolution and the spring 39 will of itself force the end 39 into the cam groove 13 and the rotation of the clutch member 12 will cause said cam groove to disengage the clutch and the machine will stop. The cam groove 60 on the roll 11 is made of such dimensions as to comply with the requirements of the work to be turned out, and the same is true of the roll grooves 40 and 41. The parts are so dimensioned that the grooves 41 always match when the machine stops, so the ends of blanks 65 may be readily passed through said grooves just as the operator starts the machine, and the partly finished bolt may as readily be with drawn after the machine stops. It will be thus seen that my machine not only turns therefore I do not wish to be limited to the above disclosure except as may be required by the claims.

What I claim is:

1. In a machine for rolling stay bolts the combination of a pair of rolls having matching grooves of the size of the body portion of the finished bolt extending partially around their circumferences and matching grooves of a larger size joined to said first mentioned grooves by inclined surfaces; a gage bar rest; a gage bar supportedby said rest, associated with said grooves and adapted to be struck anddisplaced from said rest by a bolt blank while being subjected to the action of said rolls; and means associated with said gage bar for restoring it to its normal position after having been displaced, substantially as described.

2. In a machine for rolling stay bolts the combination of a pair of rolls provided with matching grooves to form. the body of the bolt, and w1th enlarged matching grooves permitting the end of a bolt blank to pass; said first mentioned grooves joined to said last meaeo mentioned grooves by surfaces adapted to shape the joint between the head and body of the finishedbolt, and one of said rolls provided with a cam groove; and a ga e bar associated with said rolls and provide with means coacting with said cam groove, substantially as described.

3. In a machine for making stay bolts the combination of a air of rolls having matching grooves of di erent dimensions; a gage bar adapted to operate in connection with said grooves; a rest on which said bar is supported; a lever ada ted to operate said bar; and a cam adapte to operate said lever, substantially as described.

at. In a machine for making stay bolts the combination of a air of rolls each provided with grooves of 'fierent sizes, the grooves on one roll matching with the grooves on the other roll; a cam carried by one of said rolls; a lever adapted to be operated by said -vided with a cam;

cam; and a gage means ada ted to operate said lever, substantially as escribed.

5. In a machine for making stay bolts the combination of a pair of grooved rolls Witnesses H. H. B 1. I. L PENDLETON. 

